f = open(r'D:\a.txt','r',encoding='utf8')
a = f.readlines()
b = []
print(a)
for i in a:
    if i == '':
        break

    print(i.isdigit())
    # print(c,end='')
    # b.append(c)
    # if c.isdigit() == True:
    #     print(111)


# print(b)
# print(max(b)-min(b))

f.close()



# a = ['2','43','333']
# for b in a:
#     print(b.isdigit())